TDConnection.h

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/************************************************************************
* Verve                                                                 *
* Copyright (C) 2004-2006                                               *
* Tyler Streeter  tylerstreeter@gmail.com                               *
* All rights reserved.                                                  *
* Web: http://verve-agents.sourceforge.net                              *
*                                                                       *
* This library is free software; you can redistribute it and/or         *
* modify it under the terms of EITHER:                                  *
*   (1) The GNU Lesser General Public License as published by the Free  *
*       Software Foundation; either version 2.1 of the License, or (at  *
*       your option) any later version. The text of the GNU Lesser      *
*       General Public License is included with this library in the     *
*       file license-LGPL.txt.                                          *
*   (2) The BSD-style license that is included with this library in     *
*       the file license-BSD.txt.                                       *
*                                                                       *
* This library is distributed in the hope that it will be useful,       *
* but WITHOUT ANY WARRANTY; without even the implied warranty of        *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files    *
* license-LGPL.txt and license-BSD.txt for more details.                *
************************************************************************/

#ifndef VERVE_TD_CONNECTION_H
#define VERVE_TD_CONNECTION_H

#include "Connection.h"

namespace verve
{
        class Neuron;

        enum TDConnectionType
        {
                VALUE_FUNCTION_TDCONNECTION,

                POLICY_TDCONNECTION
        };

        class TDConnection : public Connection
        {
        public:
                VERVE_DECL TDConnection(Neuron* preNeuron, Neuron* postNeuron, 
                        TDConnectionType type);

                VERVE_DECL virtual ~TDConnection();

                VERVE_DECL virtual TDConnectionType VERVE_CALL getTDConnectionType();

                VERVE_DECL virtual void VERVE_CALL increaseETrace();

                VERVE_DECL virtual void VERVE_CALL decayETrace();

                VERVE_DECL virtual void VERVE_CALL setETraceDecayFactor(real value);

                VERVE_DECL virtual void VERVE_CALL setTDDiscountFactor(real value);

                VERVE_DECL virtual void VERVE_CALL setETrace(real trace);

                VERVE_DECL virtual real VERVE_CALL getETrace()const;

                VERVE_DECL virtual void VERVE_CALL resetShortTermMemory();

                VERVE_DECL virtual void VERVE_CALL applyTDLearning(
                        real learningFactorTimesTDError);

                VERVE_DECL virtual void VERVE_CALL setIsInActiveList(bool inList);

                VERVE_DECL virtual bool VERVE_CALL isInActiveList();

        protected:
                real mETrace;

                TDConnectionType mTDConnectionType;

                real mETraceDecayFactor;

                real mTDDiscountFactor;

                bool mIsInActiveList;
        };
}

#endif

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